[PATCH] D35320: [X86][SSE] Add support for extending bool vectors bitcasted from scalars.

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon updated this revision to Diff 106865.
RKSimon added a comment.

Moved to AND+CMPEQ pattern suggested by @delena.

This required a modification to LowerVSETCC to reverse a dag combine to: (X & Y) != 0 --> (X & Y) == Y iff Y is power-of-2. This avoids an inversion and the creation of 0/-1 bits vectors.


Repository:
  rL LLVM

https://reviews.llvm.org/D35320

Files:
  lib/Target/X86/X86ISelLowering.cpp
  test/CodeGen/X86/bitcast-int-to-vector-bool-sext.ll
  test/CodeGen/X86/bitcast-int-to-vector-bool-zext.ll
  test/CodeGen/X86/bitcast-int-to-vector-bool.ll

-------------- next part --------------
A non-text attachment was scrubbed...
Name: D35320.106865.patch
Type: text/x-patch
Size: 371751 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20170717/44bce193/attachment-0001.bin>